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(No Model.) 2 SheetsShee t 1.

D. ANDERSON 8v J. NAYLOB. v SPARK EXTINGUISHER AND SMOKE CONSUMER. No. 472,568.

Pa'tented'Apr. 12, 1892.

@2272 ew' e d (No Model.) 2 SheetsSheet 2.

D. ANDERSON 8v J. NAY-LOB.

SPARK EXTINGUISHBR AND SMOKE CONSUMER.

Patented Apr! 12, 1892.

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UNITED STATES PATENT OFFICE.

DAVID ANDERSON AND JOHN NAYLOR, OF STOVVELL, VICTORIA.

SPARK-EXTINGUISHER AND SMOKE-CONSUMER.

SPECIFICATION forming part of Letters Patent No. 472,568, dated April 12, 1892. Application filed August 13, 1891. Serial No. 402,590. (No model.)

To all whom it may concern.-

Be it known that we, DAVID ANDERSON, gentleman, and JOHN NAYLOR, engineer, citizens of the United Kingdom of Great Britain and Ireland, and residents of the town of Stowell, in the British Colony of Victoria, have invented a new and useful invention entitled An Improved Spark-Extinguisher and Smoke-Consumer, of which the following is a specification.

Ourinvention is arranged in the smoke-box of locomotive or portable engineboilers, or it is arranged in the smoke-box or smoke-chamber of any kind of boiler or furnace where a supply of exhaust-steam, by preference, is obtainable. It is constructed as will be hereinafter explained.

The invention consists in the combination and arrangement, in a smoke-box or smokechamber, as above stated, above the fine or tube-line, of a horizontal grating composed of small tubes or tubular bars having fine perforations on their upper surface, from which steam is emitted to extinguish the sparks. These tubes or tubular bars are preferably arranged to radiate from a central exhaust or waste-steam pipe from an engine-cylinderv or other source. The perforated tubes or pipes may be arranged otherwise than radial,

although we prefer that they are fed from a central exhaust-steam pipe. The nozzle end of exhaust-pipewe make, preferably,in a separate casting, enlarging it in diameter where the ends of perforated tubes or pipes are screwed into it, such enlargement or bore be ing of such a form as to cause the steam to be led into the ends of tubes; also, to provide a blast when the engine is at rest we connect a small steam-pipe to the nozzle to act as a blower.

To assist in the consumption of smoke in locomotives, we have a branch pipe that springs from near the bottom end of exhaustpipe in smoke-box and leading out from its top to the atmosphere. Such pipe is furnished with astop-valve in order that the exhaust through it can be regulated to increase or decrease the blast or current leaving the smoke-box.

In order that our invention may be well understood, we will describe it with reference to the accompanying drawings.

Figure 1 is a side elevation of the front end of a locomotive with a hole broken therein to show the internal construction. Fig. 2 is an end elevation of the device shown in Fig. 1, the end of the locomotive being broken away, so as to show the elements of our invention. Fig. 3 is a portion of Fig. 2 in plan. Fig. at is a view, partly in section, of a detail of construction. Figs. 1, 2, and 3 show how we adapt our invention to the smoke-box of a locomotiveengine, A being the exhaust or blast pipe, and B its nozzle or upper end, secured in position, as shown. 0 are tubes or pipes screwed into holes in nozzle and having their upper surface perforated and their outer ends closed. Nozzle B has a downwardly-projecting lip 19, thatforms the inner rim of an annular channel b to lead the steam into the pipes or tubes 0. D is the blower-pipe for feeding exhaustpipe with steam when the engine is at rest. E is the branch pipe leading from exhaust, and E its stop-valve.

Fig. tshows the form of nozzle we employ im the smoke-box of a portable engine or other smoke box or chamber when a vertical exhaust-pipe is not standing therein, A being the exhaust, B the nozzle, b its inner lip, and b annular channel, 0 perforated tubes, and D the blower-pipe.

The mode of operation of our invention is as follows: The unconsumed particles of fuel or sparks enter the smoke-box under our perreason of the draft, when before reaching the funnel they have to pass through the upwardly-sprayed steam-mist issuing from perforations of pipes O, and consequently the sparks are immediately extinguished; also, in locomotives by employing a branch exhaust-pipe E when the engine is worked with a high pressure of steam and the exhaust therefrom produces a blast that is too powerful to allow the smaller particles of fuel to be thoroughly'consumed before leaving the tubes and smoke-box then at such times the valve E is opened to the desired extent to allow a portion of exhaust-steam to escape without passing through exhaust-pipe A of smoke-box, and thus the draft therein is lessened.

What we claim as our invention, and desire to secure by Letters Patent, is--- forated'tubular grating and then ascend by Exhaustnozzle 13,11aving within it lip Z) presence of two witnesses, this 16th day of IO and annular channel I), in combination with June, A. D. 1891.

perforated tubes 0, screwed into and radiat- DAVID ANDERSON. ing from it, and preferably with blower-pipe JOHN NAYLOR. 5 D, all substantially as and for the purposes \Vitnesses:

set forth, and arranged as illustrated in our JAS. IIINGSTON, drawings. lvotary Public, lllclbom'ne.

In testimony that we claim the foregoing as BEDLINGTON BoDYooMB,

our invention we have signed our names, in Patent Agent, JlIeZbournc. 

